Reinforcing textile of a fiber composite component

Abstract

The present invention relates to a method for producing a reinforcing textile for a fiber composite component, which has a ceramic matrix in which the reinforcing textile is embedded. The method comprises a step of providing a textile with at least one reinforcing fiber (40) and one support fiber (42). The method also comprises a step of stiffening (16) the support fiber (42), wherein the stiffened support fiber (42) is configured to support the reinforcing fiber (40) when the reinforcing textile is impregnated (22) with a slurry. Furthermore, the invention relates to a reinforcing textile for a fiber composite component, a method for producing a fiber composite component, and a textile manufacturing apparatus.

Description

Technical area

[0001] The present invention relates to a method for producing a reinforcing textile for a fiber composite component comprising a ceramic matrix. Furthermore, the invention relates to a reinforcing textile for a fiber composite component, a method for producing a fiber composite component, and a textile production device. State of the art

[0002] Fiber composite components are components in which reinforcing fibers, for example in the form of continuous fibers, are embedded within a matrix. The reinforcing fibers can be provided, for example, as a reinforcing textile. Fiber composite components can withstand particularly high loads, particularly through load-adapted alignment of the fibers in the matrix, and increase the damage tolerance of the fiber composite component.

[0003] Ceramic materials are also used as a matrix for fiber composite parts. During production, the reinforcing textile is impregnated with a slurry. The slurry can have a viscous and / or paste-like consistency. The slurry can, for example, contain solid components, such as minerals, which form the ceramic matrix through a sintering process. The viscous consistency of the slurry and also the solid components can make it significantly more difficult to completely impregnate the reinforcing textile. For example, the slurry can displace individual fibers of the reinforcing textile during impregnation. This can result in the fibers being arranged unevenly and / or no longer being able to bear the load. Accordingly, the finished fiber composite component will not have the desired mechanical properties.The reinforcing textile can also act as a kind of filter, preventing the solid components of the slurry from passing through the reinforcing textile during impregnation. This can lead to an uneven distribution of these particles. For example, the fiber composite component may then have an uneven matrix, particularly with defects such as gaps, also known as cavities, within the fiber composite component.

[0004] DE 32 45 412 A1 describes a process for producing a fiber-reinforced plastic.

[0005] DE 40 12 229 A1 describes a fiber-reinforced composite component with a ceramic matrix and a corresponding manufacturing process.

[0006] DE 41 37 406 A1 describes a hybrid yarn made of polyamide fibers and reinforcing fibers.

[0007] DE 10 2015 209 535 A1 describes a method and a device for producing a semi-finished fiber product as well as a semi-finished fiber product and a method for producing a fiber-reinforced plastic component. Description of the invention

[0008] A first aspect of the invention relates to a method for producing a reinforcing textile of a fiber composite component. A reinforcing textile can be a textile that forms the fiber reinforcement in the fiber composite component. The reinforcing textile can comprise a plurality of fibers, which are, for example, connected, woven, or braided to one another. The reinforcing textile can also form a three-dimensional structure and / or comprise multiple layers. The reinforcing textile can be designed to be arranged in the fiber composite component to be produced therefrom in a manner appropriate to the load. A specific arrangement of respective fibers can be predetermined for this purpose. The reinforcing textile can comprise a plurality of different fibers. The fibers can be formed, for example, from a ceramic material, a plastic, and / or a natural raw material.

[0009] The fiber composite component has a ceramic matrix. The reinforcing textile is embedded in the ceramic matrix during production of the fiber composite component. The reinforcing textile can be a semi-finished product that is further processed into the fiber composite component. The reinforcing textile can be structurally modified during further processing. The matrix can completely or almost completely surround the reinforcing textile. The reinforcing textile can, for example, be visible at one end of the fiber composite component or be completely encased. The matrix can be formed from an inorganic, non-metallic material or a metal oxide, such as silicon carbide or aluminum oxide. The fiber composite component can be formed from a ceramic fiber composite material comprising the reinforcing textile and the matrix. The fibers of the reinforcing textile can be ceramic fibers, at least in the final state of the fiber composite component.The fiber composite component can be designed as a composite ceramic, which is also referred to as Ceramic Matrix Composite or CMC.

[0010] The method comprises a step of providing a textile with at least one reinforcing fiber and one supporting fiber. The textile can already have the shape of the reinforcing textile. The supporting fiber can, for example, be in contact with an associated reinforcing fiber at least in some areas. The textile can have multiple reinforcing fibers and / or supporting fibers. Different supporting fibers and / or reinforcing fibers can also be provided in the textile, which differ, for example, in their cross-section and / or their material. The supporting fiber can also be in contact with multiple reinforcing fibers in some areas and / or have different areas which are in contact with different reinforcing fibers. Reinforcing fibers can also be provided which are not in contact with a supporting fiber and / or are supported by a supporting fiber.The fibers can, for example, be formed from a single filament or multiple filaments. The respective reinforcing fibers and / or respective supporting fibers can be formed as continuous fibers. The fibers can, for example, have a square or round cross-section. Respective embodiments for individual reinforcing fibers and / or supporting fibers can equally apply to several of these fibers, if provided.

[0011] The reinforcing fibers can be designed to absorb tensile forces in the fiber composite component. The supporting fibers, however, may no longer be included in the finished fiber composite component and / or, for example, may not have a force-transmitting function.

[0012] The method also includes a step of stiffening the supporting fiber. The stiffening can be achieved, for example, by changing the chemical structure of the supporting fiber. The reinforcing fiber, however, can remain unchanged during the stiffening. For example, the stiffening can transform the supporting fiber from a pliable to a stiff fiber. The reinforcing fiber can remain pliable. The textile can, for example, be pliable upon provision. Through the stiffening, the resulting reinforcing textile can, for example, be stiff and / or self-supporting.

[0013] The stiffened support fiber is designed to support the reinforcing fiber when the reinforcing textile is impregnated with a slurry. For example, the reinforcing fiber can be in contact with the stiffened support fiber, thus preventing displacement of the reinforcing fiber and / or deformation of the reinforcing textile during impregnation, or at least reducing this compared to a textile with an unstiffened support fiber or a reinforcing textile entirely without support fibers. This allows the fiber composite component to achieve its desired properties, even when impregnated with a highly viscous slurry under high pressure.

[0014] The slip can, for example, contain a liquid and solid components. During sintering, the liquid components can evaporate and the solid components form the ceramic matrix. The support fiber can, for example, be made of a plastic such as polypropylene, polyamide, polyethylene or nylon. Stiffening is then easily possible, for example using a thermal process. The reinforcing fiber can be made of a ceramic material, in particular aluminum oxide or silicon carbide. This makes a particularly good bond to the matrix possible. However, the reinforcing fiber can also be made of a plastic or carbon, for example. The support fiber and the reinforcing fiber can have different diameters. For example, the diameter of the support fiber can be smaller than the diameter of the reinforcing fiber.

[0015] In one embodiment of the method for producing the reinforcing textile, it can be provided that the stiffening of the support fiber includes a step of heating the support fiber. Heating for stiffening can, for example, be energetically advantageous if sintering and / or a pyrolysis step immediately follow the impregnation. Heating can, for example, increase the stiffness of the support fiber.

[0016] In one embodiment of the method for producing the reinforcing textile, the stiffening of the support fiber may include a chemical treatment step. For example, a catalyst may be applied before and / or during the impregnation. The chemical treatment may, for example, increase the stiffness of the support fiber. The chemical treatment may change polymers in the support fiber or, for example, cause deposits to form on the support fiber.

[0017] In one embodiment of the method for producing the reinforcing textile, the stiffening of the supporting fiber can be provided with a step of irradiating the supporting fiber, in particular with UV radiation. The irradiation can, for example, increase the stiffness of the supporting fiber. The irradiation can be carried out particularly easily, even with complex reinforcing textile structures, without causing undesired displacement of the textile.

[0018] In one embodiment of the method for producing the reinforcing textile, it can be provided that the stiffening of the supporting fiber takes place in the same tool, such as a mold, as the sintering and / or impregnation. This eliminates the need for a tool change, and the tool already supports the textile in the desired position.

[0019] In one embodiment of the method for producing the reinforcing textile, the step of providing the textile may include a step of producing the textile. For example, the textile can be manufactured using the same device that then stiffens the supporting fiber to produce the reinforcing textile. This allows for quick and easy production.

[0020] The reinforcing textile can be produced by weaving, braiding, laying, knitting and / or knitting the textile from the reinforcing fiber and the supporting fiber. The textile can be designed, for example, as a woven fabric, braid, scrim, warp-knitted fabric and / or knit. The reinforcing fiber and the supporting fiber can form a common fiber strand that is processed together. For example, the textile can be braided from three strands. Two strands can, for example, each be formed by a reinforcing fiber, and a further one of these strands can be formed by the reinforcing fiber in combination with the supporting fiber. This makes production particularly simple, for example essentially identical to the production of a textile without supporting fiber. The supporting fiber can, for example, be wound around the reinforcing fiber beforehand to form the further strand.For example, the supporting fiber can be pre-arranged parallel to the reinforcing fiber to form the additional strand. The strand thus formed can be wound onto a spool and then prepared for textile production. This strand can then be processed analogously to a single fiber.

[0021] In one embodiment of the method for producing the reinforcing textile, it can be provided that the support fiber is wound around the reinforcing fiber at least in some regions. This winding can take place, for example, before or during the production of the textile from which the reinforcing textile is formed. The support fiber can thus extend, for example, helically along the reinforcing fiber. The support fiber can be wound around the reinforcing fiber. The reinforcing fiber can, for example, have a substantially straight extension. The support fiber can, for example, be wound around the reinforcing fiber completely along a longitudinal extension of the reinforcing fiber. The wrapped support fiber can support the reinforcing fiber particularly well.In addition, if the support fiber is removed during the production of the fiber composite component, any potential defects can be unevenly distributed, thus reliably preventing excessive weakening. The support fiber can be in contact with the reinforcing fiber along the entire wrapped area or only in certain areas. The support fiber can also be wrapped around multiple reinforcing fibers.

[0022] In one embodiment of the method for producing the reinforcing textile, it can be provided that the supporting fiber is arranged parallel to the reinforcing fiber at least in some regions. For example, the supporting fiber can extend parallel to the reinforcing fiber along its entire longitudinal extent. For example, the supporting fiber and the reinforcing fiber can extend essentially straight. Due to the parallel extension, the supporting fiber can be particularly short. Furthermore, the supporting fiber can be arranged, for example, on a side of the reinforcing fiber facing away from the introduction side of the slurry during impregnation, and thus support it particularly well. Due to the parallel arrangement, production can also be particularly simple and cost-effective.

[0023] In one embodiment of the method for producing the reinforcing textile, the supporting fiber can be pliable before stiffening. After stiffening, the supporting fiber can be stiff and / or self-supporting. Due to the previously pliable supporting fiber, it can be processed particularly easily into the textile and arranged as desired, for example, with a low risk of fiber breakage.

[0024] In one embodiment of the method for producing the reinforcing textile, it can be provided that the provided textile has a removable structure, in particular a structure that can be removed by degradation. The degradation can comprise dissolving the material of the removable structure, for example, by heating and / or a solvent. Examples of solvents are water or alcohol. The structure can be formed, for example, as a fiber. For example, the removable structure can be formed by a monofilament that extends through the reinforcing textile. The removable structure can thus be easily incorporated during the production of the textile, for example, as an additional strand during braiding. However, the removable structure can also be formed by a separate part, such as an insert in the textile. Before impregnation with the slip, the removable structure can be removed from the reinforcing textile.This step can, for example, comprise a chemical process, mechanical removal and / or heating. The removal of the flow aid can take place simultaneously with and optionally also by the same process as the stiffening of the support fiber. In this way, the removal of the structure can be particularly simple and cost-effective. The removal of the structure can form a flow aid for impregnation with the slurry. The flow aid can, for example, be designed as a channel in the reinforcing textile through which the slurry can flow better than through other areas in the reinforcing textile. In this way, for example, filtering of solid components from the slurry through the reinforcing textile can be prevented before they can reach deeper layers of the textile. For example, the removable structure can be formed from a PVA material, with water being used as the solvent for removal.

[0025] The supporting fiber can be designed to be removed during the production of the fiber composite component after the reinforcing textile has been impregnated with the slurry. For example, the removal can be carried out using a thermal or chemical process. Mechanical removal is also possible. For example, a pyrolysis step and / or a sintering step is carried out during the production of the fiber composite component, which can simultaneously serve to remove the supporting fiber. In this way, a homogeneous fiber composite component can be produced in which the supporting fiber is no longer present and may weaken the component. Any gaps in the reinforcing textile resulting from the removal of the supporting fiber can be completely or at least partially filled by the matrix.

[0026] A second aspect relates to a reinforcing textile for a fiber composite component with a ceramic matrix. The reinforcing textile can be produced by a method according to the first aspect. Corresponding features and advantages of the first aspect also form features and advantages of the second aspect, and vice versa. The reinforcing textile can be produced by stiffening a supporting fiber of a textile with a reinforcing fiber and the supporting fiber, wherein the supporting fiber is designed to support the reinforcing fiber during impregnation of the reinforcing textile with a slurry.

[0027] A third aspect relates to a method for producing a fiber composite component having a ceramic matrix in which a reinforcing textile is embedded. A reinforcing textile of this fiber composite component, which can be used in the method for producing the fiber composite component, can have been produced by a method according to the first aspect and / or can be a reinforcing textile according to the second aspect. Corresponding features and advantages of the first and second aspects also form features and advantages of the third aspect, and vice versa. The method for producing the fiber composite component comprises a step of providing the reinforcing textile. The method for producing the fiber composite component comprises a step of impregnating the reinforcing textile with a slip, in particular by a pressure slip casting method.Impregnation can take place in a tool, whereby the impregnation can take place in the same or a different tool as the stiffening. After impregnation, the reinforcing textile can be dried, for example to produce a green compact. After impregnation, the impregnated reinforcing textile can be purified by a pyrolysis step, and the ceramic matrix can be produced by sintering certain solid components of the slurry, in particular by sintering the green compact. After drying, the green compact can be transferred to a sintering tool or sintered in the tool in which impregnation took place. The pyrolysis step can take place at a lower temperature than the sintering. For example, pyrolysis and sintering can take place one after the other in a heating process, in particular in the same furnace. Drying can also take place beforehand in this heating process, optionally also in the same furnace.During sintering, additional pressure can be applied. During impregnation, the reinforcing textile can comprise the stiffened support fiber. After impregnation, the stiffened support fiber can optionally be removed. The fiber composite component can therefore be free of any support fibers and, for example, the reinforcing textile embedded in the matrix can only comprise any reinforcing fibers. Pyrolysis can, for example, decompose any support fibers. The ceramic matrix can, for example, be produced from the slurry after the reinforcing textile has been impregnated. A mold for stiffening, impregnation and / or sintering can be the same. For example, the mold for impregnation and drying can have openings for the liquid in the slurry, which are not provided for in the mold for sintering.Overall, the fiber composite component can have a particularly load-adapted and / or homogeneous layer of respective reinforcing fibers and thus withstand particularly high loads.

[0028] In one embodiment of the method for producing the fiber composite component, it can be provided that the support fiber is removed after impregnation of the reinforcing textile, in particular during drying and / or sintering of the impregnated reinforcing textile. For this purpose, the green compact can, for example, be kept at a pyrolysis temperature for a certain minimum period of time and only be further heated to a sintering temperature after the support fiber has evaporated.

[0029] A fourth aspect relates to a fiber composite component. The fiber composite component can have been produced using the method according to the third aspect and / or have a reinforcing textile that corresponds to the reinforcing textile according to the second aspect and / or was produced using the method according to the first aspect. Corresponding features and advantages of the first, second, or third aspect also form features and advantages of the fourth aspect, and vice versa. The fiber composite component can therefore be free of respective supporting fibers and, for example, the reinforcing textile embedded in the matrix can only have respective reinforcing fibers. Even if the supporting fiber is no longer present in the finished fiber composite component, the presence of respective stiffened supporting fibers can still be detectable in the fiber composite component during production. For example, residues of the supporting fiber can remain in the matrix.For example, certain defects or voids in the matrix may correspond to the supporting fiber layer and be larger in number due to the supporting fiber in the reinforcing textile.

[0030] In addition, it can be demonstrated in the case of the fiber composite component that the position of the reinforcing fibers could only be achieved due to the support provided by the supporting fibers during impregnation.

[0031] A fifth aspect relates to a textile production device for producing a reinforcing textile with a reinforcing fiber and a supporting fiber for a fiber composite component with a ceramic matrix. The textile production device can be designed to carry out the method according to the first aspect and / or to produce the reinforcing textile according to the second aspect. The textile production device can be designed to carry out at least parts of the method according to the third aspect and / or to be used to produce the fiber composite component according to the fourth aspect. Corresponding features and advantages of the first, second, third, and fourth aspects also form features and advantages of the fifth aspect, and vice versa.

[0032] The textile manufacturing device comprises a stiffening device designed to stiffen the supporting fiber. The stiffened supporting fiber is designed to support the reinforcing fiber when the reinforcing textile is impregnated with a slurry. The stiffening device can comprise, for example, a heating device, a chemical treatment device, and / or an irradiation device. The textile manufacturing device can additionally comprise a flow aid removal device designed to remove a flow aid. The textile manufacturing machine can be designed to produce a textile from at least two fibers, such as the reinforcing fiber and the supporting fiber, from which textile the reinforcing textile is formed by stiffening the supporting fiber.For this purpose, the textile manufacturing machine can, for example, have a knitting device, a warp-knitting device, a braiding device or a weaving device.

[0033] A further aspect relates to a manufacturing device for producing a fiber composite component with a ceramic matrix and a reinforcing textile embedded therein. The reinforcing textile can initially have a stiffened support fiber, which is optionally removed by the manufacturing device during further production of the fiber composite component. The manufacturing device can have a stiffening device, an impregnation device, a pyrolysis device, and / or a sintering device. Some of these devices can be designed jointly; for example, the pyrolysis device and the sintering device can be formed by a furnace. The stiffening device can be designed to stiffen the support fiber. The impregnation device can be designed to impregnate the reinforcing textile with the slip, in particular by a pressure slip casting process.By impregnation and optional subsequent drying using a drying device, a green compact, for example, can be produced. The pyrolysis device can be designed to remove the support fiber by pyrolysis. The pyrolysis device can be designed to remove organic contaminants prior to sintering. The sintering device can be designed to sinter the green compact to produce the ceramic matrix. Short description of the characters Fig. 1 schematically illustrates a method for producing a green compact for a fiber composite component with a ceramic matrix. Fig. Figure 2 illustrates a first embodiment of a reinforcing textile for the green body, which is produced by the method according to Fig. 1 is produced. Fig. Figure 3 illustrates a second embodiment of a reinforcing textile for the green body, which is produced by the method according to Fig. 1 is produced. Fig. Figure 4 illustrates a third embodiment of a reinforcing textile for the green body, which is produced by the method according to Fig. 1 is produced. Fig. Figure 5 illustrates a fourth embodiment of a reinforcing textile for the green body, which is produced by the method according to Fig. 1 is produced. Detailed description of embodiments

[0034] Fig. 1 schematically shows a method for producing a green compact from which a fiber composite component with reinforcing textile embedded in a ceramic matrix can be produced.

[0035] In a first optional step 10, a reinforcing fiber 40 is wound with a supporting fiber 42. The reinforcing fiber 40 is formed from an aluminum oxide in the material shown. The supporting fiber 42 is formed from a plastic. Both fibers 40, 42 are flexible and formed as continuous fibers in this process step 10. Optionally, the reinforcing fiber 40 is wound with two or more supporting fibers 42. After the winding in step 10, a fiber strand thus formed can be wound together onto a spool in a likewise optional step 12, which is also referred to as rewinding.

[0036] In a step 14, a textile is braided from the strand formed in steps 10 and 12 by the reinforcing fiber 40 and the supporting fiber 42 and is prepared for further processing. The basic structure of the braided textile is shown in the Fig. 2 to 5. The Fig. 3 and the Fig. 5 show how the supporting fiber 42 is wound around the reinforcing fiber 40 along its longitudinal extent.

[0037] If steps 10 and 12 are not carried out, the textile is braided, for example, by the reinforcing fiber 40 and the supporting fiber 42, which are present as separate strands, in step 14. The supporting fiber 42 is arranged parallel to the reinforcing fiber 40 in the textile, which in the Fig. 2 and the Fig. 4 is shown.

[0038] During braiding in step 14, a removable structure can optionally be woven in, which in the embodiments shown is formed by a further fiber 44 made of PVA. The removable structure or the removable further fiber 44 is in the embodiments of the Fig. 4 and the Fig. 5 shown.

[0039] The textile formed by braiding in step 14 is then further processed by stiffening the supporting fiber 42 through heat setting in a step 16. During heat setting, the supporting fiber 42 is heated to such an extent that the supporting fiber 42 is now stiff instead of pliable, for example due to a change in the crystallinity of the material of the supporting fiber 42. Alternatively or additionally, the supporting fiber 42 can also be irradiated or chemically treated for stiffening in step 16, for example. In the reinforcing textile thus produced, the stiffened supporting fiber 42 is configured to support the reinforcing fiber 40 when the reinforcing textile is impregnated with a slip in a step 22.

[0040] This is followed by a preforming step 18, in which the reinforcing textile is arranged in the desired position and shape for the fiber composite component to be produced, and thus also for the green body. Preforming in step 18 can alternatively also be performed before stiffening in step 16.

[0041] In step 20, the removable structure or the additional fiber 44, if provided, is degraded. The removal of the removable structure forms a flow aid for the impregnation 22 with the slurry. This creates channels in the area of ​​the fibers 44, which reduce the filtering effect of the reinforcing textile. This ensures that during impregnation in step 22, the solid components of the slurry also reach all layers of the reinforcing textile and that a homogeneous ceramic matrix can be formed during sintering. For the degradation in step 20, the textile is rinsed with water, for example. The stiffened support fibers 42 also prevent undesired displacement of the reinforcing fibers 40. Alternatively or additionally, the removal of the additional fibers 44 can also form a hollow structure for other functions.For example, a cooling channel can be formed in the fiber composite component, which otherwise can only be created by post-processing.

[0042] In step 22, the reinforcing textile is impregnated with the slip, here, for example, using a pressure slip casting process. The stiff support fiber 42 holds the reinforcing fiber 40 in position, so that the desired alignment and position of the reinforcing fiber 40 is maintained. The support fibers 42 reduce or prevent compression and displacement of the reinforcing textile during impregnation 22. Areas with an undesirably increased amount of reinforcing fiber, which would hinder impregnation with the ceramic matrix mass or the slip, are also avoided. The green compact can then already be produced at this point. Optionally, drying can be carried out beforehand to at least partially or completely remove liquid components of the slip.

[0043] The green compact is then heated. This can occur after drying or also serve for drying purposes. The green compact can be kept at a pyrolysis temperature until the support fiber 42 has completely decomposed and evaporated. At the pyrolysis temperature, for example, the solid components of the slurry do not yet sinter. Heating is then continued for sintering. During the sintering process, any gaps between the solid components that were previously occupied by the support fiber 42 can be filled. For this purpose, a sufficiently small diameter was previously selected for the support fiber 42. In the produced fiber composite component, only the reinforcing fibers 40 remain, which, in addition to the matrix, conduct loads. Alternatively or additionally, the reinforcing fibers 40 can inhibit crack propagation in the matrix, thus increasing the service life and reducing the likelihood of sudden component failure.

[0044] This allows the production of fiber-reinforced composite ceramics, also known as CMC, which can withstand high temperatures, has a low coefficient of thermal expansion, and is extremely strong. The resulting component is much less susceptible to fatigue than pure ceramics and thus has a long service life. This component is ideally suited, for example, as a turbine component in the hot gas area of ​​aircraft engines or power plants. Automated production is also readily possible, as even with automated impregnation, a layer of the reinforcing textile and its fibers can be secured at least as well as with wet winding or hand lay-up processes. Furthermore, reinforcing textiles with multiple layers can simply be impregnated, instead of wetting individual layers separately and then layering them on top of each other. This allows for very low manufacturing costs, and series production is cost-effective. Reference symbol 10 Step: Winding 12 Step: Winding 14 Step: Braiding 16 Step: Stiffening 18 Step: Preforms 20 Step: Degrade 22 Step: Impregnation 40 reinforcing fibers 42 supporting fibers 44 additional fibers

Claims

[1] A method for producing a reinforcing textile of a fiber composite component, which has a ceramic matrix in which the reinforcing textile is embedded, the method comprising at least the following steps: - Providing a textile with at least one reinforcing fiber (40) and one supporting fiber (42); - stiffening (16) the support fiber (42), wherein the stiffened support fiber (42) is designed to support the reinforcing fiber (40) when impregnation (22) of the reinforcing textile with a slip takes place. [2] The method of claim 1, wherein stiffening (16) the support fiber (42) comprises at least one of the following steps: - Heating of the support fiber (42), - A chemical treatment of the supporting fibre (42), and - Irradiation of the support fiber (42), in particular with UV radiation. [3] Method according to claim 1 or 2, wherein the step of providing the textile comprises a step of producing the textile, in particular by weaving, braiding (14), knitting, laying and / or knitting the textile from the reinforcing fibre (40) and the supporting fibre (42). [4] Method according to one of the preceding claims, wherein the support fiber (42) is wound around the reinforcing fiber (40) at least in regions. [5] Method according to one of the preceding claims, wherein the support fiber (42) is arranged at least partially parallel to the reinforcing fiber (40). [6] Method according to one of the preceding claims, wherein the support fiber (42) is pliable prior to stiffening (16) of the support fiber (42). [7] Method according to one of the preceding claims, wherein the textile provided has a removable structure, in particular a structure that can be removed by degradation, wherein the removal of the structure forms a flow aid for the impregnation (22) with the slip. [8] Reinforcing textile for a fiber composite component with a ceramic matrix, wherein the reinforcing textile was produced by stiffening (16) a supporting fiber (42) of a textile with a reinforcing fiber (40) and the supporting fiber (42), wherein the supporting fiber (42) is designed to support the reinforcing fiber (40) during impregnation (22) of the reinforcing textile with a slip. [9] Method for producing a fiber composite component which has a ceramic matrix in which a reinforcing textile is embedded, the method comprising at least the following steps: - Providing the reinforcing textile produced by a method according to one of the preceding claims 1 to 7 and / or formed as a reinforcing textile according to claim 8; - impregnating (22) the reinforcing textile with a slip, in particular by a pressure slip casting process. [10] Method according to claim 9, wherein the supporting fiber (42) is removed after the impregnation (22) of the reinforcing textile, in particular during drying and / or sintering of the impregnated reinforcing textile. [11] Textile manufacturing device for producing a reinforcing textile with a reinforcing fiber (40) and a supporting fiber (42) for a fiber composite component with a ceramic matrix, wherein the textile manufacturing device has a stiffening device which is designed to stiffen the supporting fiber (42) (16), wherein the stiffened support fiber (42) is designed to support the reinforcing fiber (40) when impregnating (22) the reinforcing textile with a slip, in particular wherein the stiffening device comprises a heating device, a chemical treatment device and / or an irradiation device.

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